Studi Pembakaran Campuran Refuse Derived Fuel dan Sawdust (Co-Firing) dalam Tungku Bakar Secara Continuous

Abstract

This study evaluates the effect of excess air variations of 10%, 30%, and 50% on flame stability and temperature distribution in a furnace using a mixed fuel of RDF and sawdust in a 50:50 ratio with a total mass of 3 kg. The results show that 30% excess air provides more optimal combustion performance compared to other variations. The calorific value at 30% excess air increased by 66.67% compared to 10% excess air and by 40.0% compared to 50% excess air. The highest temperature distribution was also observed at 30% excess air, with a peak temperature of 937°C. In terms of emissions, flue gas energy at 30% excess air was lower than other excess air variations, indicating more complete and environmentally friendly combustion. Additionally, 30% excess air produced less combustion residue and a higher Destruction Removal Efficiency (DRE) compared to 10% excess air, but lower than 50% excess air. These findings indicate that using 30% excess air is the optimal condition to improve combustion efficiency and reduce flue gas emissions.